Loom



Aug. 11, 1925.

WITNESS W. HARRIS Loolvi Filed Sept. 22, 1924 ATTORNEY Patented Aug. 11,$258 WILLIAM HARRIS, 01E LPA'IERSON, NEW JERSEY Application filedSeptember 22, 192%.

To all whom it may concern.

Be it known that 1 lViLLIAM HARni's, a citizen of the United States,residing at Paterson, in the county of Passaic and State of New Jersey,have invented certain new and useful Improvements in Looms, of which thefollowing is a specification.

This invention contemplates the employment in a loom of a flexibletensioning connection for maintaining the sheet of warp and woven fabrictaut, and one object of the invention is to maintain that part of thesheet taut which extends from the sand roller, or equivalent means foradvancing the sheet, to the cloth beam, or equivalent means for windingup the fabric end of the sheet, without the tensioning connectioninterfering with the direct or positive advance of the sheet by theadvancing means. Another object is to provide for the control of certainslack which, if the connection is made endless, must be present in theconnection because, while the sand roller delivers the sheet at aconstant rate, the increase in diameter of the wound mass on theclothbeam as the same builds up must be taken into account.

In the drawing, the view is a side elevation of a loom constructed tocarry out the two stated objects of the invention.

1 is the usual warp beam, journaled in the loom frame 2, which has anysuitable breastbeam 2. 3 is the sand-roller journaled in the frame andassumed to be rotated by any well known means in the direction of thearrow. 4 is the cloth-beam, also journaled in the frame. The sand-rollerand clothbeam have affixed to their shafts outwardly of the frame thesprocket-wheels 3 and 4 The sheet of warp A and fabric B extends in theusual way from the warp-beam, on which it is wound, forward over thebreastbeam, and then around under the sand roller.

The flexible connection is a chain 5 here having an upwardly reachingloop 5 which is slung over idlers 6 journaled in a suitable overheadstructure so as to form a depending main bight or bend 5 In this bightor bend is a pulley 8 from which is suspended a carrier 9 for the mainweight 10. The chain is in peripheral tractive engagement with thesprocket-wheels 8 and 4P, the arrangement being such that regardingwheel 3 as affording. a purchase for the chain the chain tends inresponse to the force repre sented by the weight to turn the cloth-beamSerial No. *zsaoee.

4c in the direction to wind up the fabric. By this arrangement the sandroller directly and positively advances (pulls) the part of the sheetrelatively'back of it forward in the usual way, and as fast as itdelivers the sheet the same as woven fabric is taken up by and wound upcompactly on the fabric beam, this latter taking place without recourseto the usual troublesome-means employcd in looms for driving thecloth-beam from the sand-roller and compensating for the gradualincrease in diameter of the wound-up mass whereas the sand-rollerdelivers at a. constant rate.

The chain is shown as endless and also includes a secondary bight orbend, 5, affording the mentioned slack, which is suspended from twoidlers 11 and 12 respectively j ournaled in the loom frame close to andpreferably more or less higher than the axes of the sand-roller andcloth-beam and between which and the major bight or bend are thesand-roller and cloth-beam, and in this bight or bend is a pulley 13from which is Suspended a carrier 14 for the secondary weight 15,lighter than weight 10; the idler 11 may be on the shaft of a roller 16over which the fabric extends on its way from the sand-roller to thecloth-beam. Thus, while that portion of the connection which connects 3and 4 and extends from P in the same direction as the fabric is wound on4- is acted upon by the tensioning force represented by weight 10, whichas indicated tends to turn 3 in the direction to wind up the fabric, theother portion of said connection connecting 3 and 45, which isnecessarily present since the sand-roller rotates at constant speedwhereas the cloth-beam rotates at decreasing speed as the wound fabricmass grows in diameter, is acted upon by a lesser tensioning forcerepresented by weight 15, which keeps the slack at all times undercontrol, especially when the connection is made to extend over idlers,as 11 and 12, which are arranged close to the sprocketwheels 3 and 4;and so preserve the connec tion in good tractive engagement with saidsprocket-wheels. This arrangement, together with the upright arrangementof the loops 5" and 5 one approximately over the other, further producescompactness and disposes the parts involved Where they will be least inthe way of the weaver and other parts of the loom.

When the weight 10 approaches the limit of its activity the attendantsimply removes the chain and rehabilitates it on the sprocketwheels 3and 4?.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent is:

1. In combination, with that moving system in a loom which includesrotary means to advance the sheet of warp and woven fabric and rotarymeans to supply the warp, rotary means to wind up the fabric end of thesheet, and a flexible tensioning connection in tractive engagement witha rotary part of the winding-up: means and a rotary part of theadvancing means and having means relatively between said partstensioning said connection and exerting force to rotate the former inthe direction to wind up the fabric and to maintain the fabric end ofthe sheet at a constant predetermined tension.

2. In combination, with that moving system in a loom which includesrotary means to advance the sheet of warp and woven fabric and rotarymeans to supply the warp, rotary means to wind up the fabric end of thesheet, and an endless flexible tensioning connection in tractiveengagement with a rotary part of the winding-up means and a rotary partof the advancing means and hav ing means relatively between said partstensioning said connection and exerting force to rotate the former inthe direction to wind up the fabric and to maintain the fabric end ofthe sheet at a constant predetermined tension.

3. In a loom, the combination, with a support, means to supply the warp,rotary means to wind up the fabric end of the sheet of warp and wovenfabric, and means to advance the sheet engaged therewith between thefirst two means, one of the first and third-named means being rotary, anendless flexible connection in tractive engagement with a rotary part ofthe winding-up means and a rotary part of the other rotary means, meansto exert a tensioning force on that portion of the connection whichconnects said parts and extends from the first-named part in relativelythe same direction as the fabric is wound up by the winding-up means,and means to exert a lesser tensioning force on the other portion ofsaid connection which connects said parts.

In testimony whereof I aflix my signature.

WILLIAM HARRIS.

